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Boer, V. de; Porter, A.L.; Someren, M. v.: Extracting historical time periods from the Web (2010) 0.00

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Date: 28. 9.2010 11:51:05

Rafols, I.; Porter, A.L.; Leydesdorff, L.: Science overlay maps : a new tool for research policy and library management (2010) 0.00

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Date: 28. 9.2010 11:49:27

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